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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

776.0. "Jitter Rid Any Good?" by AMULET::HALVERSON (This space intentionally filled in) Tue Oct 06 1987 11:24

    Has anyone used the JitterRid screen to minimize the flickering
    on an Amiga 1080 monitor in interlace mode?  If so how does it work
    well.
    
    
    
    Steve
    
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776.1Window tinting film is just as good.HYSTER::DEARBORNTrouvez MieuxTue Oct 06 1987 12:5211
    I've seen a few reviews of it and they don't reccommend it.  Sunglasses
    will work just as well.  It is just a tinted piece of plastic.
    
    The biggest problem is that it is very reflective, making reflections
    very obvious.
    
    Ed Acciardi had one (I think.)  As far as I know, he doesn't use
    it anymore.
    
    Randy
    
776.2...LEDS::ACCIARDITue Oct 06 1987 14:2019
    Yes, I did have one.  When you first place one over an interlaced,
    high-contrast screen, the difference is startling.  The flicker
    is almost completely gone.  After a while, you notice that the colors
    have all turned into pastels, and the sharpness is gone.  
    
    I'm sure you can achieve the same effect by lowering the brightness
    and contrast.
    
    I have some saved screen color combos that don't flicker at all
    in hi-res.  The trick is to make sure that all four colors registers
    on Workbench are set to about the same intensity levels.  For example,
    a light blue text on a dark blue background won't flicker at all.
    Likewise, amber on black looks fine.
    
    I'm a little pissed at hearing that CBM's long-persistance monitor
    may be cancelled.  Interlace flicker is the single biggest flaw
    on the Amiga, but also one of the easiest to fix.  I may yet end
    up springing for an Electrohome monitor.  Or, wait and see if a
    de-interlace card appears for the A2000 and then upgrade. 
776.3Opinions differWHYVAX::KRUGERThu Oct 08 1987 20:238
    Personally, I like the Jitter-Rid. To each his own....
    
    Even with "nice" colors, I can see interlace blinking. The Jitter-Rid
    helps reduce that feeling to near zero. It is, I believe, polarizing
    plastic. Even if it's a placebo-type effect, I don't care. It works
    for me!
    
    dov
776.4HYSTER::DEARBORNTrouvez MieuxMon Oct 12 1987 12:485
    Polarization has no effect whatsoever on the interlace flicker.
    It is the tinting that reduces the flicker.
    
    Randy
    
776.5use genlockVIDEO::LEIBOWMon Oct 12 1987 13:195
    I don't have any software that forces interlace... But, if I
    must you interlace, I also use GENLOCK and watch TV at the
    same time.  GENLOCK seems to cut a lot of jitter out somehow.
    
    		--Mike
776.6PolarizingWHYVAX::KRUGERMon Oct 12 1987 14:057
    re .4
    
    I don't have two Jitter-Rids, so I don't know for sure if they are
    polarizing or not. But polarizing does help. It's been documented
    by these "perception" types.
    
    dov
776.7HYSTER::DEARBORNTrouvez MieuxMon Oct 12 1987 14:2711
    Re: Polarization
    
    Rotating a polarization filter will show if it has any effect or
    not.  It has no effect.  However, most polarization filters are
    tinted.  People using polarized sunglasses report reduced flickering.
    Tipping the head from side to side (rotating the filter) makes no
    difference in the effect...therefore it is the tint of the lenses
    that is reducing the flickering.
    
    Turning down the brightness has virtually the same effect.